If clear_print_queue desktop shortcut on manager's computer does not work.
1) Checking cable connections
1-1 Unplug and re plug on the back of the computer (push & hold the bottom clip to release)
USB printer cable
Not the same
2-2 if printing still doesn't work immediately. Reboot the computer, If may take up to 2 reboots
2) Testing test page
1. Bottom left corner of windows in search field "printer". Under printer & devices. Look for "printer"
Make sure it is not greyed out.

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2. Right click and choose properties
3. Click the "Print Test Page"

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3. Make sure "Use Printer Offlline" is unchecked.
3. If you still can't print check the cable carefully on both sides. Swap with another printer and try same test again.